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The newer smaller CCD-pcb

A project log for Linear CCD module

TCD1304-based linear CCD module driven by a Nucleo F401RE, an STM32F401 black pill or an STM32F103 blue pill

esben-rosselesben rossel 06/02/2016 at 13:160 Comments

Being annoyed with myself that I'd made a PCB for the TCD1304 way larger than needed, I made a new SMD-version. It's slightly more than half the size of the original. I also did my best to keep the analog output away from the digital driving signals, and here is the result:

Because of the re-routing the pin-out on the 10-pin connector is changed:

With the new layout I was hoping to see an improvement in the noise-level, however if there's any improvement, I'm not able to see it. I also see no difference in noise whether or not I feed it 4V from a ultra low noise PSU, or directly from the nucleo's +5V. However I've not tried any very long integrations, so I cannot verify that 5V is as good as 4V.

And of course: Here's an example of a reading of the CCD:

It's a ruler. You can see the twenty nine 1mm marks and that there are two lightsources in the room it was made in.

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